new web issue

I'm using ISPconfig 2.2.13 on suse 10.1 since 2 months without any problems

but yesterday i have tried to add new web like www.newweb.com.eg , ISPconfig creates the new web site and i can see it on the sites tree , but it was not access able

i have tried to open my /etc/apache2/vhosts/Vhosts_ispconfig.conf
and there is no record talking aboute my new domain www.domain.com
i added the records by my self to Vhosts_ispconfig.conf and the site working without visual problems

and this is my httpd -t command output:
#####
Syntax error on line 45 of /etc/apache2/vhosts/Vhosts_ispconfig.conf:
Invalid command 'suPHP_Engine', perhaps misspelled or defined by a module not included in the server configuration
###################################
i have tried to remove this line and try to create the new site again but ispconfig still can't update vhosts file
whats wrong ??